SPN 974 - FMI 3 (Fault Code 133)

SPN974 FMI3
Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal, or shorted to
High Source

Remote Accelerator Pedal Position Sensor Circuit

CODES:
Fault Code: 133
PID(P), SID(S): P029
SPN: 974
FMI: 3/3
Lamp: None
SRT:

REASON: Remote Accelerator Pedal or Lever Position Sensor 1 Circuit - Voltage Above Normal, or shorted to High Source. High voltage detected at remote accelerator pedal position circuit.

EFFECT: Remote accelerator will not operate. Remote accelerator position will be set to zero percent.

Circuit Description:
The remote accelerator pedal or lever provides the operators accelerator command to the electronic control module (ECM) through the OEM harness. The ECM uses this signal to determine the fueling command.

Component Location:
The remote accelerator pedal or lever location varies with each OEM. Refer to the OEM troubleshooting and repair manual.

Shop Talk:
If troubleshooting an intermittent accelerator problem:
The remote accelerator pedal or lever position sensor signal voltage can be monitored with the INSITE™ electronic service tool, while flexing the harness to locate the intermittent connection.

Possible causes of this fault include:
• Remote accelerator pedal or lever position signal circuit shorted to battery or +5 volt supply
• Open remote accelerator pedal or lever return circuit in the harness or connections
• Remote accelerator supply shorted to battery
• Failed remote accelerator pedal or lever position sensor.

Note: The three wires in the remote accelerator position sensor circuit must be twisted together.


Read More:
SPN 91 - FMI 4 (Fault Code 132)
SPN 102 - FMI 16 (Fault Code 124)








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